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CVE-2021-47950— Advanced Guestbook 2.4.4 Persistent XSS via Smilies

Quick assessment

Affected
Ampps Advanced Guestbook
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ampps Advanced Guestbook是印度Ampps公司的一个提供访客留言发布与管理功能的网站留言板系统。 Ampps Advanced Guestbook 2.4.4版本存在跨站脚本漏洞，该漏洞源于表情符号管理界面存在持久型跨站脚本，可能导致经过身份验证的攻击者通过操纵s_emotion参数注入恶意脚本。

CVSS 6.4 · Medium EPSS 0.19% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ampps Advanced Guestbook 2.4.4 affected
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I. Basic Information for CVE-2021-47950

Vulnerability Information
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Vulnerability Title
Advanced Guestbook 2.4.4 Persistent XSS via Smilies
Source: CVE Program / CVE List V5
Vulnerability Description
Advanced Guestbook 2.4.4 contains a persistent cross-site scripting vulnerability in the smilies administration interface that allows authenticated attackers to inject malicious scripts by manipulating the s_emotion parameter. Attackers can submit POST requests to admin.php with JavaScript code in the s_emotion field, which executes when administrators view the smilies tab.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Ampps Advanced Guestbook 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ampps Advanced Guestbook是印度Ampps公司的一个提供访客留言发布与管理功能的网站留言板系统。 Ampps Advanced Guestbook 2.4.4版本存在跨站脚本漏洞，该漏洞源于表情符号管理界面存在持久型跨站脚本，可能导致经过身份验证的攻击者通过操纵s_emotion参数注入恶意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ampps Advanced Guestbook 2.4.4 -

II. Public POCs for CVE-2021-47950

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III. Intelligence Information for CVE-2021-47950

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Vendor Advisories for CVE-2021-47950 (1)

Exploits & Public PoCs for CVE-2021-47950 (1)

Other References for CVE-2021-47950 (1)

IV. Related Vulnerabilities

Same vendor: Ampps
Same weakness: CWE-79

V. Comments for CVE-2021-47950

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